@super_avenger10
How many damn times will you ask?
I already said to send it back with the warranty!
You know that spamming is punished! If I see you one more time asking about changing laptop CPU/GPU I'll warn you double the normal!

@MuneebSalman1999
As I said it will work, but a 400w is recommended.
If your PSU is good enough and has a good 12v Rail then it's good to go!
And yes if your PSU isn't good enough it will restart due to not enough power for the components, which will result in hardware failure if you don't get a better PSU.

@JamesBond000001
No.
We're talking about almost a 4 generation difference....
Of course those aren't equal.
But a GTX model from the 200's series will beat every GT model from the 600's!
Of course there will be some compatibility issues regarding DX11 games, but in DX10 and below the GTX200's takes the cake even if you think that the GTX260 is the worst GTX card which isn't true, because it's one of the best gaming cards out there in the lower budget market and was one of the best of its generation!

@JamesBond000001
instead of going with the hd 6670@ 5800rs id go with hd 7750 i think which is between 6500-7000.
i got mine for 6800 its a saphire and im loving it.........especially to think that it competes with the gtx 650 in some departments.

And also to all the friends:
From tomorrow my exams will be start and i will not be allowed to use computer. (I am using now secretly ). And there's a little chance of allowing to use computer before my annual examinations. So goodbye till march 2014 . But don't worry i will visit by time to time ...

@MuneebSalman1999
That's not a brand, it's a manufacturer!
Depends on your likings and tastings!
In the end all are the same card just every single one is clocked different!
So it's a matter of choice really...

@super_avenger10
You're warranty is for you to be able to send it back to be repaired! You're warranty won't be voided. And yes if it's a GPU issues they'll send it back to be changed.
The only case when you lose the warranty is when YOU"RE the one who made damage to it.
For ex.: if you open it you lose the warranty, if you drop it and it cracks you lose the warranty and things like this!

But why do you ask? The warranty, as I said, is for you to be able to send it for repairs, even if there's a risk losing it! It was given for a reason! Why would you not send it back, being afraid that you'll lose the warranty. It would be a total waste to having the warranty and not use it just because you're afraid to lose it!